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Array(frames),function(_,frameIndex){return frameIndex/(frames-1);});var outputRange=Array.from(new Array(frames),function(_,frameIndex){var progress=2*frameIndex/(frames-1);var rotation=index?+(360-15):-(180-15);if(progress>1.0){progress=2.0-progress;}var direction=index?-1:+1;return direction*(180-30)*easing(progress)+rotation+\"deg\";});var layerStyle={width:size,height:size,transform:[{rotate:timer.interpolate({inputRange:[0,1],outputRange:[0+30+15+\"deg\",2*360+30+15+\"deg\"]})}]};var viewportStyle={width:size,height:size,transform:[{translateY:index?-size/2:0},{rotate:timer.interpolate({inputRange:inputRange,outputRange:outputRange})}]};var offsetStyle=index?{top:size/2}:null;var lineStyle={width:size,height:size,borderColor:color,borderWidth:size/10,borderRadius:size/2};return 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* as React from 'react';\nimport {\n  Animated,\n  Easing,\n  Platform,\n  StyleProp,\n  StyleSheet,\n  View,\n  ViewStyle,\n} from 'react-native';\nimport { withTheme } from '../core/theming';\nimport { Theme } from '../types';\n\ntype Props = React.ComponentProps<typeof View> & {\n  /**\n   * Whether to show the indicator or hide it.\n   */\n  animating?: boolean;\n  /**\n   * The color of the spinner.\n   */\n  color?: string;\n  /**\n   * Size of the indicator.\n   */\n  size?: 'small' | 'large' | number;\n  /**\n   * Whether the indicator should hide when not animating.\n   */\n  hidesWhenStopped?: boolean;\n  style?: StyleProp<ViewStyle>;\n  /**\n   * @optional\n   */\n  theme: Theme;\n};\n\ntype State = {\n  timer: Animated.Value;\n  fade: Animated.Value;\n};\n\nconst DURATION = 2400;\n\n/**\n * Activity indicator is used to present progress of some activity in the app.\n * It can be used as a drop-in for the ActivityIndicator shipped with React Native.\n *\n * <div class=\"screenshots\">\n *   <img src=\"screenshots/activity-indicator.gif\" style=\"width: 100px;\" />\n * </div>\n *\n * ## Usage\n * ```js\n * import * as React from 'react';\n * import { ActivityIndicator, Colors } from 'react-native-paper';\n *\n * const MyComponent = () => (\n *   <ActivityIndicator animating={true} color={Colors.red800} />\n * );\n *\n * export default MyComponent;\n * ```\n */\nclass ActivityIndicator extends React.Component<Props, State> {\n  static defaultProps: Partial<Props> = {\n    animating: true,\n    size: 'small',\n    hidesWhenStopped: true,\n  };\n\n  state = {\n    timer: new Animated.Value(0),\n    fade: new Animated.Value(\n      !this.props.animating && this.props.hidesWhenStopped ? 0 : 1\n    ),\n  };\n\n  rotation: Animated.CompositeAnimation | undefined = undefined;\n\n  componentDidMount() {\n    const { animating } = this.props;\n    const { timer } = this.state;\n\n    // Circular animation in loop\n    this.rotation = Animated.timing(timer, {\n      duration: DURATION,\n      easing: Easing.linear,\n      // Animated.loop does not work if useNativeDriver is true on web\n      useNativeDriver: Platform.OS !== 'web',\n      toValue: 1,\n      isInteraction: false,\n    });\n\n    if (animating) {\n      this.startRotation();\n    }\n  }\n\n  componentDidUpdate(prevProps: Props) {\n    const { animating, hidesWhenStopped } = this.props;\n    const { fade } = this.state;\n\n    if (animating !== prevProps.animating) {\n      if (animating) {\n        this.startRotation();\n      } else if (hidesWhenStopped) {\n        // Hide indicator first and then stop rotation\n        Animated.timing(fade, {\n          duration: 200,\n          toValue: 0,\n          useNativeDriver: true,\n          isInteraction: false,\n        }).start(this.stopRotation.bind(this));\n      } else {\n        this.stopRotation();\n      }\n    }\n  }\n\n  private startRotation = () => {\n    const { fade, timer } = 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(progress > 1.0) {\n                  progress = 2.0 - progress;\n                }\n\n                const direction = index ? -1 : +1;\n\n                return `${direction * (180 - 30) * easing(progress) +\n                  rotation}deg`;\n              }\n            );\n\n            const layerStyle = {\n              width: size,\n              height: size,\n              transform: [\n                {\n                  rotate: timer.interpolate({\n                    inputRange: [0, 1],\n                    outputRange: [\n                      `${0 + 30 + 15}deg`,\n                      `${2 * 360 + 30 + 15}deg`,\n                    ],\n                  }),\n                },\n              ],\n            };\n\n            const viewportStyle = {\n              width: size,\n              height: size,\n              transform: [\n                {\n                  translateY: index ? -size / 2 : 0,\n                },\n                {\n                  rotate: timer.interpolate({ inputRange, outputRange }),\n                },\n              ],\n            };\n\n            const offsetStyle = index ? { top: size / 2 } : null;\n\n            const lineStyle = {\n              width: size,\n              height: size,\n              borderColor: color,\n              borderWidth: size / 10,\n              borderRadius: size / 2,\n            };\n\n            return (\n              <Animated.View key={index} style={[styles.layer]}>\n                <Animated.View style={layerStyle}>\n                  <Animated.View\n                    style={[containerStyle, offsetStyle]}\n                    collapsable={false}\n                  >\n                    <Animated.View style={viewportStyle}>\n                      <Animated.View style={containerStyle} collapsable={false}>\n                        <Animated.View style={lineStyle} />\n                      </Animated.View>\n                    </Animated.View>\n                  </Animated.View>\n                </Animated.View>\n              </Animated.View>\n            );\n          })}\n        </Animated.View>\n      </View>\n    );\n  }\n}\n\nconst styles = StyleSheet.create({\n  container: {\n    justifyContent: 'center',\n    alignItems: 'center',\n  },\n\n  layer: {\n    ...StyleSheet.absoluteFillObject,\n\n    justifyContent: 'center',\n    alignItems: 'center',\n  },\n});\n\nexport default withTheme(ActivityIndicator);\n"]},"metadata":{},"sourceType":"script"}